Necrofiend

Item	Chance	Quantity
Crypt Fiend Parts	≈ 79%	1–6
Invader's Scourgestone	≈ 35%
Dripping Spider Mandible	≈ 32%
Thick Spider's Silk	≈ 20%
Shadow Silk	≈ 13%
Hard Spider Leg Tip	≈ 11%
Huge Venom Sac	≈ 1.9%
Thorium Lockbox	≈ 0.45%
Aquamarine	≈ 0.35%
Book: Gift of the Wild II	≈ 0.34%
Tome of Arcane Brilliance	≈ 0.32%
Star Ruby	≈ 0.32%
Codex: Prayer of Fortitude II	≈ 0.28%
Recipe: Purification Potion	≈ 0.08%
Traveler's Backpack	≈ 0.08%
Codex: Prayer of Shadow Protection	≈ 0.06%
Formula: Enchant Boots - Greater Agility	≈ 0.06%
Pattern: Felcloth Boots	≈ 0.06%
Pattern: Felcloth Robe	≈ 0.06%
Pattern: Felcloth Shoulders	≈ 0.06%
Pattern: Heavy Scorpid Belt	≈ 0.06%
Pattern: Runecloth Pants	≈ 0.06%
Plans: Thorium Boots	≈ 0.06%
Plans: Thorium Helm	≈ 0.06%

Drops and chances are estimates; not all have been confirmed in the current game. 316 rarer world drops are not listed.